Great tips, @mwra, as usual. One thing that didn’t sit well with me was the fact that some information was being left behind, e.g. the translator’s name. I didn’t know that Tbx was using the RIS format so probably I should have look there to fix this!
(Not knowing this, I made a small template of sorts with a script to import selected references in Bookends and to post the tbx note link back to the reference. Could I share it here or should I start a new thread?)